C-Link Protocol Commands
Commands
B-2
Model 5030
i
SHARP Instruction Manual
Thermo Fisher Scientific
For example, if the instrument ID is set to 25, then each command must
begin with the ACSII character code 153 decimal. The analyzer ignores any
command that does not begin with its instrument identification number. If
the instrument ID is set to 0, then this byte is not required. For more
information on changing Instrument ID, see Chapter 3, “
Operation
”.
The analyzer must be in the remote mode and service mode not active in
order to change instrument parameters remotely. However, the command
“set mode remote” can be sent to the analyzer to put it in the remote mode.
Report commands (commands that don’t begin with “set”) can be issued
either in the remote or local mode, regardless of the service mode setting.
For information on changing modes, see Chapter 3, “
Operation
”.
The commands are not case sensitive. Each command must begin with the
proper instrument identification number (ASCII) character. The command
in the following example begins with the ASCII character code 153
decimal, which directs the command to the Model 5030
i
, and is
terminated by a carriage return “CR” (ASCII character code 13 decimal).
<ASCII 153> T I M E <CR>
Many of the commands have two forms. One form reads parameter from
the instrument’s memory, and the other writes, or updates, a parameter.
The syntax for a write command adds the word “set” in front of the
command and provides an argument. Command responses are generally
echoed with a data element appended.
Note
If the Service Mode is active, C-Link “set” commands are not
allowed. This is to prevent parameters from being changed remotely while
the unit is being serviced locally.
▲
If an incorrect command is sent, an error message is generated. The list of
error responses is shown in
Table B–1
. The following example sends the
incorrect command “set unit mg/m3” instead of the correct command “set
conc unit mg/m3.”
Send:
set
unit
mg/m3
Receive:
set unit mg/m3 bad cmd
Commands
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